[Bug libstdc++/98226] Slow std::countr_one

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98226

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This seems like an optimizer bug. There is no way I'm going to repeat the
entire body of countr_zero in countr_one.